For example, Patrick Mahomes, the quarterback for the Kansas City Chiefs, signed a 10-year contract worth up to $503 million in 2020, making him one of the highest-paid athletes in history. In addition to their salaries from their teams, many professional football players also earn money through endorsements, sponsorships, appearances, and other business ventures. For example, Cristiano Ronaldo, one of the most famous footballers in the world, makes a substantial amount of money from his numerous endorsement deals with companies such as Nike, Herbalife, and Tag Heuer.